Weirdness is sufficient to inspire hatred. (If you doubt me, spend some time browsing Wikipedia’s AfDs.) The recent flurry of cryonics stuff shows that, I hope.
If you don’t find that convincing, easy enough to manufacture reasons eg. it’s covert eugenics and thus threatening, or it’s a waste of resources, or it encourages risky behaviors, or it undermines traditional morality, or...
Weirdness is sufficient to inspire hatred. (If you doubt me, spend some time browsing Wikipedia’s AfDs.) The recent flurry of cryonics stuff shows that, I hope.
If you don’t find that convincing, easy enough to manufacture reasons eg. it’s covert eugenics and thus threatening, or it’s a waste of resources, or it encourages risky behaviors, or it undermines traditional morality, or...